Thermal cracking of CH3Cl leads to auto-catalysis of deposited coke

Eugénie Blaser (1) , Cécile Rosier (2) , Michel Huet (2) , Perrine Chaurand (3) , Christophe Geantet (1) , Stéphane Loridant (1)

1 CATREN - IRCELYON-Catalyse Hétérogène pour la Transition Energétique
2 Elkem Silicones
3 CEREGE - Centre européen de recherche et d'enseignement des géosciences de l'environnement

Thermal cracking of CH3Cl was studied on SiO2 particles at 0.4 MPa, from 375 to 550 °C. The cracking occurs at temperatures higher than 400 °C and leads to the formation of solid coke composed of chlorinated hydrocarbons. This coke is active as it catalyses the CH3Cl cracking at temperatures lower than those required for the thermal cracking, leading to the formation of HCl, CH4 and hydrocarbons. Cl present in this coke is responsible for its activation.

Domaines: Chimie organique; Catalyse

Eugénie Blaser, Cécile Rosier, Michel Huet, Perrine Chaurand, Christophe Geantet, et al.. Thermal cracking of CH3Cl leads to auto-catalysis of deposited coke. Catalysis Science & Technology, 2021, 11 (2), pp.469-473. ⟨10.1039/d0cy01725f⟩. ⟨hal-03159671⟩